Combined die and its application in molding composite material structure member

A combined mold and mold technology, which is applied in the field of composite material molding, can solve problems such as uneven pressure transmission, unsatisfactory pressure, and excessive cavity space

Active Publication Date: 2013-11-27
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the molding process of multi-cavity structure products, there are problems such as too large cavity space and multiple cavities side by side. The existing silicone rubber soft mold has problems suc

Method used

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  • Combined die and its application in molding composite material structure member
  • Combined die and its application in molding composite material structure member
  • Combined die and its application in molding composite material structure member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The cross-section of the product to be formed is an inverted U-shape with a width of 60mm, a height of 60mm and a thickness of 10mm; such as image 3 shown:

[0026] 1) Make a silicone rubber / metal core combination soft mold with the same shape as the pressurized cavity of the product to be molded; make a closed metal female mold with the same shape as the product to be molded;

[0027] 2) Lay the composite material on the outside of the soft mold made in step 1), put it into the closed metal female mold after the layering is completed, and fix the metal core and the closed metal female mold with screws; heat, forming composite materials;

[0028] 3) Demoulding: first open and close the metal female mold, and then take out the soft mold from the cavity of the product to obtain the formed composite material structure.

[0029] The silicone rubber in the silicone rubber / metal core composite soft mold described in the above step 1) is an addition type RTV silicone rubber...

Embodiment 2

[0031] like figure 1 and figure 2 As shown, a combined mold includes a silicone rubber / metal core combined soft mold, a closed metal female mold 4 and a connector 5; the silicone rubber / metal core combined soft mold includes a silicone rubber 1 and a metal core 2 The periphery of the metal core 2 is the silicone rubber 1, and the silicone rubber / metal core combination soft mold mold is installed in the cavity of the product to be formed 3; The closed metal female mold 4 is located outside the product to be formed 3; The closed metal female mold 4 and the metal core 2 are fixedly connected with screws 5;

[0032] The cross-section of the product to be formed is an I-shaped, with a width of 60mm, a height of 60mm, and a thickness of 10mm; such as Figure 4 shown:

[0033] 1) Make a silicone rubber / metal core combination soft mold with the same shape as the pressurized cavity of the product to be molded; make a closed metal female mold with the same shape as the product to be...

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Abstract

The invention relates to a combined die and its application in molding a composite material structure member, and belongs to the technical field of composite material molding. The combined die comprises silicon rubber (1), a metal core (2), a closed metal female die (4) and a connecting piece (5); the closed metal female die (4) is positioned outside a product for molding (3); and the closed metal female die (4) is fixedly connected with the metal core (2) through the connecting piece (5). The product molded through using the silicon rubber/metal core combined flexible die has an obvious better appearance than products molded through complete silicon rubber flexible dies; and the product having an appearance quality and an internal quality which satisfy requirements is obtained through adjusting the volume ratio of the silicon rubber flexible die to the metal core. The adjustment of the ratio of the volume of the silicon rubber flexible die to the volume of the metal core is realized.

Description

technical field [0001] The invention relates to a combined mould and its application in forming composite material structural parts, belonging to the technical field of composite material forming. Background technique [0002] Silicone rubber soft mold molding process for resin-based composite materials: The silicone rubber soft mold molding process uses the silicone rubber soft mold as the core mold, the rigid material (metal) as the female mold, and the resin-based composite material (made of prepreg layers) It is placed between the core mold and the female mold. When the mold is heated, the volume expansion of the silicone rubber core mold (the thermal expansion of the silicone rubber) is limited by the composite material and the metal female mold, resulting in a huge expansion pressure. During the process, the composite material is pressurized to cure pressure. No external pressure source is required in the molding process, and it is suitable for the overall co-curing o...

Claims

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Application Information

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IPC IPC(8): B29C33/00B29C70/30B29C70/54
Inventor 谭朝元邓火英梁馨谭珏林治峰宋朝晖秦德辉孙宝岗凌英董波蒋文革冷霜刘宏涛林琳王保林姜琦
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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